Tokyo, Osaka
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Asia/Tokyo
The local time in Japan, live to the second. The whole country, including Tokyo, Osaka is on UTC+9 all year, with no daylight saving time.
The live clock at the top of this page shows the current time in Japan. Tokyo is on UTC+9 right now.
Japan uses GMT+9, which is UTC+9 today (IANA time zone Asia/Tokyo).
No. Japan stays on UTC+9 all year, so its clocks never change.